﻿<html>
<hear>
<title>设置列表项图像</title>
<style>
   body{background-color:#fff;}
   ul{
       font-size:1.5em;
       color:green;
       list-style-image:url(img/1.png);
     }
     .img_fault{
            list-style-image:url(img/fault.png);
    }
    .img_none{
           list-style-image: nane;
    }
</style>
</hear>
<body>
 <h2>环保工程</h2>
<ul>
<li>废气净化处理</li>
<li class="img_fault">固体废物处理</li>
<li>污染土壤修复</li>
<li class="img_nane">环境质量监测</li>
</ul>
</body>
</html>
